Solve Equations with Rational Coefficient

Solve Equations with Rational Coefficient

​By Mr. Omar Shishani

Poll

How was this chapter so far?

• Easy & Fun

• Easy

• medium

• Challenging

Multiple Choice

Quick Check:

Solve the equation below

5x = 35

• x = 7

• x = 6

• x = 5

• x = 40

Multiple Choice

Quick Check:

Solve the equation below

–8z = 48

• z = -6

• z = -5

• z = -7

• z = 40

Multiple Choice

Quick Check: Solve the equation below

$$\frac{n}{4}=7$$  

• n = 28

• n = 3

• n = 24

• n = 32

Multiple Choice

Quick Check: Solve the equation below

$$\frac{n}{-3}=9$$  

• n = -27

• n = 6

• n = 27

• n = -24

Draw

$$28=7x$$

Multiple Choice

Solve the equation below

10 = 0.5x

• x = 20

• x = 5

• x = -20

• x = 9.5

Multiple Choice

Solve the equation below

0.3x = 27

• x = 90

• x = 8.1

• x = -90

• x = -8.1

Multiple Choice

Solve the equation below

-0.5z = -20

• z = 40

• z = -40

• z = -10

• z = 10

Multiple Choice

Find the inverse multiplication of the following coefficient:

$$\frac{5}{6}x=25$$  

• $$\frac{5}{6}$$  

• $$\frac{6}{5}$$  

• $$\frac{-5}{6}$$  

• $$\frac{-6}{5}$$  

Multiple Choice

Find the inverse multiplication of the following coefficient:

$$\frac{4}{7}x=16$$  

• $$\frac{4}{7}$$  

• $$\frac{7}{4}$$  

• $$\frac{-4}{7}$$  

• $$\frac{-7}{4}$$  

Multiple Choice

Find the inverse multiplication of the following coefficient:

$$4x=16$$  

• $$\frac{1}{4}$$  

• $$\frac{4}{1}$$  

• $$\frac{-1}{4}$$  

• $$\frac{-4}{1}$$  

Multiple Choice

Find the inverse multiplication of the following coefficient:

$$0.25x=16$$  

• $$\frac{1}{0.25}$$

• $$\frac{0.25}{1}$$

• $$\frac{-1}{0.25}$$

• $$\frac{-0.25}{1}$$

Multiple Choice

Why do we use reciprocal (Multiplication Inverse)?

• To Isolate the variable

• To get the correct answer

• To do Math

Multiple Choice

Solve the following equation:

$$\frac{8}{3}x=16$$  

• $$x=6$$  

• $$x=42.66$$  

• $$x=5$$  

• $$x=\frac{2}{3}$$  

Multiple Choice

Solve the following equation:

$$\frac{7}{8}x=21$$  

• $$x=24$$  

• $$x=18.375$$  

• $$x=\frac{5}{8}$$  

• $$x=\frac{8}{9}$$  

Multiple Choice

Solve the following equation:

$$\frac{8}{3}x=19$$  

• $$x=7.125$$  

• $$x=50.667$$  

• $$x=\frac{3}{8}$$  

• $$x=\frac{8}{19}$$  

Multiple Choice

Solve the following equation:

$$\frac{8}{3}x=\frac{16}{9}$$  

• $$x=\frac{2}{3}$$  

• $$x=\frac{3}{2}$$  

• $$x=\frac{3}{8}$$

• $$x=\frac{8}{16}$$  

Multiple Choice

Solve the following equation:

$$\frac{7}{4}x=\frac{21}{16}$$  

• $$x=\frac{3}{4}$$  

• $$x=\frac{3}{2}$$

• $$x=\frac{4}{7}$$  

• $$x=\frac{21}{16}$$